70,000 (seventy thousand) is the natural number following 69,999 and preceding 70,001. It is a round number.
Selected numbers in the range 70001–79999 70030 = largest number of digits of π that have been recited from memory
71656 = pentagonal pyramidal number
72771 = 3 x 127 x 191, is a sphenic number, triangular number, and hexagonal number.
73296 = is the smallest number n, for which n−3, n−2, n−1, n+1, n+2, n+3 are all Sphenic number. 73440 = 15 × 16 × 17 × 18 (can also be written as 18! ÷ 14! or ) 73712 = number of n-Queens Problem solutions for n = 13 73728 = 3-smooth number
74353 = Friedman prime 74897 = Friedman prime
75025 = Fibonacci number, Markov number 75175 = number of partitions of 44 75361 = Carmichael number
76084 = amicable number with 63020 76424 = tetranacci number
77778 = Kaprekar number
78163 = Friedman prime 78498 = the number of primes under 1,000,000 78557 = conjectured to be the smallest Sierpiński number 78732 = 3-smooth number
Primes There are 902 prime numbers between 70000 and 80000.
References